.banner-ad {
  height: 480px;
  position: relative;
}

.carousel {
  position: absolute;
  left: 50%;
  transform: translate(-50%);
  height: 100%;
}

.carousel img {
  /* width: 100%; */
  min-width: 1240px;
  /* max-height: 480px; */
  vertical-align: middle;
}

.banner-ad-center {
  height: 100%;
  position: relative;
}

.banner-menu {
  position: absolute;
  top: 0;
  padding: 10px 0;
  width: 244px;
  box-sizing: border-box;
  height: 100%;

  font-size: 12px;
  line-height: 12px;
  background-color: rgba(255, 255, 255, .8);

  cursor: pointer;
}

.banner-menu li {
  position: relative;
  height: 12.5%;
  padding: 0 29px;
}

.banner-menu li:hover {
  background-color: rgba(255, 255, 255, .8);
}

.banner-menu li>div {
  position: absolute;
  top: 50%;
  left: 29px;
  transform: translate(0, -50%);
}

.btn {
  position: absolute;
  top: 50%;
  width: 30px;
  height: 30px;
  background: url(../images/gotop-arrow.png) no-repeat center center;
  cursor: pointer;
}

.btn.btn-left {
  left: 244px;
  transform: translate(0, -50%) rotate(-90deg);
}

.btn.btn-right {
  right: 0;
  transform: translate(0, -50%) rotate(90deg);
}

.btn-circles {
  position: absolute;
  bottom: 10px;
  left: 57%;
}

.btn-circles li {
  float: left;
  margin-right: 10px;
  width: 6px;
  height: 6px;
  border: 1px solid #fff;
  border-radius: 50%;
  cursor: pointer;
}

.btn-circles li:last-child {
  margin-right: 0;
}

.btn-circles li.active {
  background-color: #00c3f5;
  border-color: #00c3f5;
}